Range “group size” and ballistic apps

[Blastattack]

Range “group size” and ballistic apps

What are you all using apps at the range, preferably on iOS? Specifically those fancy apps that measure group size and give your ballistics. Are there any “reverse ballistics” apps where you input your actual drop at various distances and it fills in the blanks for intermediate distances? I’m gearing up for some long range rimfire shooting, and I believe, perhaps erroneously, that such apps would be at least helpful or interesting.

 

[freedomintheskies]

Streloc is a great ballistics app, but will not measure group size. The best unit I have used for marking shots, scoring, bullet speed etc; is Silver Mountain Targets "Solo" system.
https://www.silvermountaintargets.com/solo-baseline-accuracy-test.html

 

[moonrayker]

There is an app called "Ballistic X" that can measure group sizes from a photo. It's not free but it's only $10.99.

 

[nbmonte]

I’ve used the app submoa for measuring group size, it’s on ios. It can be a bit finicky, but there are a couple good tutorials online you can google.

Most of the ballistic apps work well. I still use isnipe occasionally, it usually matches up with my kestrel. What I’ve found with ballistic tables, even my kestrel, is the old adage, garbage in=garbage out. The more accurate you are imputing your data, the better results you get. Avoid guesstimates whenever possible.

 

[Kudu]

So what you're looking for is two apps: one to measure group size and one to calculate DOPE. I believe that one of the freeware apps (Ballistics AE maybe?) had the feature to measure group size too, but it didn't work very well.

For group size measuring, I agree with @moonrayker that the "Ballistic X" app is the best bang for your buck right now and does a great job of measuring group size down range. All you have to do is give it some references (yardage, 1" reference point on the target, point of aim, etc.) and it will give you a cool display of your group size (in MOA, MIL, in or cm), adjustment to correct back to zero and a bunch of other cool data.

For calculating your DOPE, you need a separate app and I would recommend either "Shooter" or "Hornady 4DOF". In these apps, @nbmonte is right, that if you don't input the variables they ask for correctly, you will never get the correct DOPE out. The reason I say go with the shooter app is that it is very user friendly and easy to navigate. All you need is the info off your rifle/scope setup and some basic info from your ammo (there is also a "bullet library" included in most of these apps with common bullets) and it should give you some down rang guesstimates. Also, shooter does allow you to enter up to 5(?) data points down range and will true up your velocity to match I believe